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Demographic translation and tempo effects
An accelerated failure time perspective

 

Germán Rodriguez

 
VOLUME 14 - ARTICLE 6
PAGES 85 - 110
Date Received: 17 Mar 2005
Date Published: 14 Feb 2006

http://www.demographic-research.org/volumes/vol14/6/

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Abstract
In this paper I review the concept of tempo effects in demography, focusing on the tempo adjustments proposed by Bongaarts and Feeney and drawing on the work of Ryder and Zeng and Land. I show that the period-shift model that underlies the proposed adjustments can be motivated from an accelerated failure time cohort perspective. I propose alternative measures of tempo under changing fertility and mortality that share a synthetic cohort interpretation with the adjusted measure of quantum. I stress similarities between the results for fertility and mortality, particularly in terms of mean age of childbearing and mean age at death, but also note some important distinctions. I conclude that the fertility adjustments can help distinguish quantum and tempo effects, but argue that in the case of mortality the Bongaarts-Feeney measure of tempo-adjusted life expectancy differs from conventional estimates because it reflects past mortality.

Author's affiliation
Germán Rodriguez
Princeton University, United States of America

Keywords
age at death, age of childbearing, alternative measures of tempo, childbearing, death, fertility, fertility adjustments, measurements, mortality, period-shift model, tempo adjustments, tempo effects

Word count (Main text)
8737

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